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* [Bug debug/46258] New: gcc.dg/tree-ssa/pr23820.c: -fcompare-debug failure with -O3 -ffloat-store
@ 2010-10-31 23:34 zsojka at seznam dot cz
  2010-11-18  8:31 ` [Bug debug/46258] " aoliva at gcc dot gnu.org
                   ` (4 more replies)
  0 siblings, 5 replies; 6+ messages in thread
From: zsojka at seznam dot cz @ 2010-10-31 23:34 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46258

           Summary: gcc.dg/tree-ssa/pr23820.c: -fcompare-debug failure
                    with -O3 -ffloat-store
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: debug
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: zsojka@seznam.cz


Compiler output:
$ gcc -O3 -ffloat-store -fcompare-debug pr23820.i 
gcc: error: pr23820.i: -fcompare-debug failure

I wasn't able to reduce the testcase further.

Tested revisions:
r166105 - fail
r153685 - fail
r158095 - fail
r159696 - fail
4.5 r165781 - fail


^ permalink raw reply	[flat|nested] 6+ messages in thread
* [Bug debug/46258] gcc.dg/tree-ssa/pr23820.c: -fcompare-debug failure with -O3 -ffloat-store
  2010-10-31 23:34 [Bug debug/46258] New: gcc.dg/tree-ssa/pr23820.c: -fcompare-debug failure with -O3 -ffloat-store zsojka at seznam dot cz
@ 2010-11-18  8:31 ` aoliva at gcc dot gnu.org
  2010-11-18  8:35 ` aoliva at gcc dot gnu.org
                   ` (3 subsequent siblings)
  4 siblings, 0 replies; 6+ messages in thread
From: aoliva at gcc dot gnu.org @ 2010-11-18  8:31 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46258

Alexandre Oliva <aoliva at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2010.11.18 08:30:50
         AssignedTo|unassigned at gcc dot       |aoliva at gcc dot gnu.org
                   |gnu.org                     |
     Ever Confirmed|0                           |1

--- Comment #1 from Alexandre Oliva <aoliva at gcc dot gnu.org> 2010-11-18 08:30:50 UTC ---
Mine


^ permalink raw reply	[flat|nested] 6+ messages in thread
* [Bug debug/46258] gcc.dg/tree-ssa/pr23820.c: -fcompare-debug failure with -O3 -ffloat-store
  2010-10-31 23:34 [Bug debug/46258] New: gcc.dg/tree-ssa/pr23820.c: -fcompare-debug failure with -O3 -ffloat-store zsojka at seznam dot cz
  2010-11-18  8:31 ` [Bug debug/46258] " aoliva at gcc dot gnu.org
@ 2010-11-18  8:35 ` aoliva at gcc dot gnu.org
  2010-11-26  5:23 ` aoliva at gcc dot gnu.org
                   ` (2 subsequent siblings)
  4 siblings, 0 replies; 6+ messages in thread
From: aoliva at gcc dot gnu.org @ 2010-11-18  8:35 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46258

--- Comment #2 from Alexandre Oliva <aoliva at gcc dot gnu.org> 2010-11-18 08:32:53 UTC ---
Created attachment 22438
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22438
Patch that fixes the bug

Here's the patch I'm testing.


^ permalink raw reply	[flat|nested] 6+ messages in thread
* [Bug debug/46258] gcc.dg/tree-ssa/pr23820.c: -fcompare-debug failure with -O3 -ffloat-store
  2010-10-31 23:34 [Bug debug/46258] New: gcc.dg/tree-ssa/pr23820.c: -fcompare-debug failure with -O3 -ffloat-store zsojka at seznam dot cz
  2010-11-18  8:31 ` [Bug debug/46258] " aoliva at gcc dot gnu.org
  2010-11-18  8:35 ` aoliva at gcc dot gnu.org
@ 2010-11-26  5:23 ` aoliva at gcc dot gnu.org
  2010-11-29 19:38 ` aoliva at gcc dot gnu.org
  2010-11-30  1:29 ` aoliva at gcc dot gnu.org
  4 siblings, 0 replies; 6+ messages in thread
From: aoliva at gcc dot gnu.org @ 2010-11-26  5:23 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46258

--- Comment #3 from Alexandre Oliva <aoliva at gcc dot gnu.org> 2010-11-26 04:27:33 UTC ---
Author: aoliva
Date: Fri Nov 26 04:27:24 2010
New Revision: 167162

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=167162
Log:
PR debug/46258
* tree-cfg.c (replace_uses_by): Don't mark BBs as altered on
debug stmts.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/tree-cfg.c


^ permalink raw reply	[flat|nested] 6+ messages in thread
* [Bug debug/46258] gcc.dg/tree-ssa/pr23820.c: -fcompare-debug failure with -O3 -ffloat-store
  2010-10-31 23:34 [Bug debug/46258] New: gcc.dg/tree-ssa/pr23820.c: -fcompare-debug failure with -O3 -ffloat-store zsojka at seznam dot cz
                   ` (2 preceding siblings ...)
  2010-11-26  5:23 ` aoliva at gcc dot gnu.org
@ 2010-11-29 19:38 ` aoliva at gcc dot gnu.org
  2010-11-30  1:29 ` aoliva at gcc dot gnu.org
  4 siblings, 0 replies; 6+ messages in thread
From: aoliva at gcc dot gnu.org @ 2010-11-29 19:38 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46258

--- Comment #4 from Alexandre Oliva <aoliva at gcc dot gnu.org> 2010-11-29 19:20:52 UTC ---
Author: aoliva
Date: Mon Nov 29 19:20:48 2010
New Revision: 167264

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=167264
Log:
PR debug/46258
* tree-cfg.c (replace_uses_by): Don't mark BBs as altered on
debug stmts.

Modified:
    branches/gcc-4_5-branch/gcc/ChangeLog
    branches/gcc-4_5-branch/gcc/tree-cfg.c


^ permalink raw reply	[flat|nested] 6+ messages in thread
* [Bug debug/46258] gcc.dg/tree-ssa/pr23820.c: -fcompare-debug failure with -O3 -ffloat-store
  2010-10-31 23:34 [Bug debug/46258] New: gcc.dg/tree-ssa/pr23820.c: -fcompare-debug failure with -O3 -ffloat-store zsojka at seznam dot cz
                   ` (3 preceding siblings ...)
  2010-11-29 19:38 ` aoliva at gcc dot gnu.org
@ 2010-11-30  1:29 ` aoliva at gcc dot gnu.org
  4 siblings, 0 replies; 6+ messages in thread
From: aoliva at gcc dot gnu.org @ 2010-11-30  1:29 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46258

Alexandre Oliva <aoliva at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED

--- Comment #5 from Alexandre Oliva <aoliva at gcc dot gnu.org> 2010-11-30 00:28:44 UTC ---
Fixed, trunk and branch.


^ permalink raw reply	[flat|nested] 6+ messages in thread
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2010-10-31 23:34 [Bug debug/46258] New: gcc.dg/tree-ssa/pr23820.c: -fcompare-debug failure with -O3 -ffloat-store zsojka at seznam dot cz
2010-11-18  8:31 ` [Bug debug/46258] " aoliva at gcc dot gnu.org
2010-11-18  8:35 ` aoliva at gcc dot gnu.org
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